That would be a gluten allergy or something like that. Or maybe a crippling phobia of food with holes in it.
You really should know your own medical problems better that "It's a thing where I can't eat donuts and possibly other foods"

Not to be a jerk and continue this, but it would be worth finding out what exactly you're allergic to. I only say this because I'm in the same boat - for years I thought I was lactose intolerant, but recently I found out that it's most likely a gluten intolerance. I've been avoiding delicious cheese for years for an imagined dietary problem - the horror!

But in all seriousness, check it out. It could also be a dairy allergy, where you're allergic to casein, or some other completely different intolerance or allergy.